Smartphone MEMS microphone, light micrograph
Light micrograph of a MEMS (MicroElectroMechanical System) microphone amplifier wafer. MEMS microphones are installed in nearly all modern smartphones. The image shows the detailed view of the amplifier wafer, mounted together with the MEMS unit in the small housing. Microscopic contrast technique: Incident differential interference contrast. Magnification: 200x when printed 10 centimetres wide.
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